KR20020067216A - Development Of Codec Solution For The Sufficient Data Streaming In UDP/TCP·IP - Google Patents

Abstract

PURPOSE: A method for developing a compression solution for an effective data transmission on an Internet communication is provided to transmit voice/image data effectively by separating a streaming of a voice/image, developing a high-compression engine for occupying the minimum range of a network band width, and simplifying a process for making streaming data based on sampling data. CONSTITUTION: As an image compressing technique, sampling data is compressed by dividing a screen into 8-16 sections based on a moving picture algorithm for reproducing a continuous screen. A header is embodied to each compressed packet and transmitted to a network. A client receives each packet, resorts the packets in accordance with an inherent header, and performs a screen reproduction. As a voice compressing technique, voice sampling data are compressed in accordance with a time sharing. A header is embodied to a packet of compressed data and transmitted to a network. A client receives each packet and reproduces the packets after a resorting process.

Description

Development of Compression Solution for Efficient Data Transmission over Internet Communication {Development Of Codec Solution For The Sufficient Data Streaming In UDP / TCP · IP}

In the past, the development of the network has mainly focused on the transmission of static data such as documents and related images and statistics, and external compression solutions such as ZIP and ARJ, Rockwell, Intel, US Robotics, It has been developed based on the compression function embedded in modem and fax communication protocols such as Texas Instrument. However, the current network environment is developing not only with the optimization of the static data transmission but also with the optimization of the dynamic streaming data such as video and voice streaming, which has recently been in the spotlight. Static data transmission based on documents and reports brings the development of electronic payment and e-commerce systems, while dynamic streaming data leads the development of fields such as video conferencing and conferences, distance education systems, and remote sensing.

These dynamic streaming data, such as video and voice sampling data, have capacities ranging from tens to hundreds of that of traditional static data, resulting in the need for significantly improved network transfer speeds and more innovative compression solutions. The technology developed based on this request is MPEG technology, a lossy compression technology that is the basis of most compression solutions. Based on the MPEG compression algorithm, many companies such as Windows Media Format, Real's Real Media Format, and Sony's VQF have specialized technologies. It is being developed based on.

However, a common feature of these compression solutions is that the compression structure of audio and video is unified, which makes it difficult to control the compression loss rate of audio and video in detail. In addition, it is required to improve the performance of the system that is provided in the form of external componentized package, and in most cases, it is required to pay royalties of hundreds of millions of dollars in foreign countries, so it is possible to use the solution and install it in the second development solution .

Development technology ownership Advantages and disadvantages and features Real Media Format Real company * Automatically adjust the quality according to the bandwidth according to the bandwidth by multi-streaming. * Difficult to adjust the quality of the audio / video streaming data as one won * Streaming data take a long time Microsoft MediaFormat Microsoft VQF Format Yamaha HQ Multimedia High Compression Solution Webfall * Compressed audio image data is binary. * Detailed adjustment of audio and video rates is possible depending on bandwidth. * Minimization of streaming data time

Our voice / video compression technology is a solution embedded technology that is being planned and developed as an alternative to overcome the packet loss phenomenon and the faster transmission effect in transmitting multimedia data over the network. Currently, the domestic Internet environment is rapidly improving with the development of cable modem, ADSL, and corporate backbone network. However, in view of the national trend, the use of 56K modem and low-bandwidth network line is still present. While recognizing that the improvement and stabilization of the compression rate required for network transmission should be pursued continuously, the development of high compression solution of multimedia data to overcome the limitation of the development of network line speed against the increasing amount of data is under development and ongoing. have.

Technical task

1. Separate voice / video streaming by overcoming the limitations of current one-way streaming data techniques

2. Development of high compression engine that occupies minimum range of network bandwidth

3. Development of engine that transmits to network at high speed by greatly simplifying the process of converting sampling data into streaming data

4. Develop an engine that can reduce other costs by optimizing processes that do not overload the server.

A) Image compression technology

I) Compress sampling data by dividing screen into 8 ~ 16 based on the principle of video algorithm which is continuous screen playback.

II) Send header to each compressed packet to network

III) After receiving each packet from client, rearrange and replay according to unique header.

B) voice compression technology

I) Compression of Speech Sampling Data According to Time Division.

II) Send header to compressed packet of packet to network

III) Replay after reordering after receiving each packet from client.

Import substitution effect

Currently, the most commercialized compression technology of these streaming data is a solution developed overseas. The cost of utilizing these technologies, which are often used in video conferencing, conferences, and distance learning, will cost between tens of millions of dollars and hundreds of millions of dollars, depending on the specifications per solution.

Most of our solutions are manufactured by our own technology, and when our solutions are commercialized, we can see import substitution effects of 100 billion to 200 billion won from 1,000 companies totaling about 100 to 1 billion won per solution developer. It is estimated to be.

Solution Name ownership Price / Standard Windows Media Microsoft ￦ 130,000,000 / routine Real Media Real ＄ 1995/60 people

Secondary Development and Application Spread

By transmitting multimedia data to the network using voice / video high compression solution, it is possible to facilitate the use and application of dynamic data to users of low-bandwidth circuits. By providing a separate package to secondary development companies that need only voice or video only, the company can contribute to cost reduction and vitalization of related industries.

Claims (1)

1. Compression Source Step 2. Encoding and Transmission of Voice / Video Data Using Compression Source 3. Data decoding step using compressed source - End -